Mohonk Mountain House's mobile key app features ways to make the most of your stay at the Hudson Valley's most iconic resort! -View your reservation -Generate your mobile key -And so much more! Mohonk Mountain House is a National Historic Landmark resort and Historic Hotel of America located in New York’s Hudson Valley, just 90 miles north of New York City. Owned and operated by the Smiley Family since its founding in 1869, the resort seeks to provide opportunities for recreation and renewal of body, mind, and spirit in a beautiful natural setting. Featuring 265 guestrooms & suites, countless leisure activities and wellness programs, and inclusive farm-to-table dining, Mohonk Mountain House has been a sought-after family destination for generations.